With my new GoPro and faced with water depths of up to 50m in choppy waters in Scotland recently, I didn't fancy wearing the elasticated headband mount that came with the camera, so I opted for a handheld accessory.
With the added security that this is 'floaty', it's incredibly comfortable to hold, spin round for self portraits and to get the attention of potential subject to give a wave. Fitting is easy and nice and secure.
I've considered getting a different handle for a 2nd camera, but to be honest, this does everything I want and is of great quality. 12 deep dives in a week and it looks as good as new.
Highly recommended as an accessory for your GoPro camera.